Most racedays with other riders
Riders sorted by the number of times they started in the same race as Haruki Sumiyoshi.
| # | Rider | Number of races |
|---|---|---|
| 1 | FUJISAWA Yuso | 1 |
| 2 | YAMASATO Isshin | 1 |
| 3 | SHIMIZU Ryotaro | 1 |
| 4 | YAMAMOTO Haruto | 1 |
| 5 | SETOGUCHI Akira | 1 |
| 6 | NAGASHIMA Satoaki | 1 |
| 7 | WATANUKI Haruto | 1 |
| 8 | OISHI Shoei | 1 |
| 9 | MORIMOTO Rintaro | 1 |
| 10 | NISHI Yuto | 1 |
| 11 | TSUJI Rikuto | 1 |
| 12 | MOMEN Ryosuke | 1 |
| 13 | SHIMAZAKI Masao | 1 |
| 14 | HASHIMOTO Koya | 1 |
| 15 | KOMORI Keishin | 1 |
| 16 | MORI Oga | 1 |
| 17 | TAKAHASHI Sho | 1 |
| 18 | MIURA Kazuma | 1 |
| 19 | YAMAGUCHI Bunta | 1 |
| 20 | OMURO Tasuku | 1 |
| 21 | HASEGAWA Yoshihiro | 1 |
| 22 | OMORI Kosuke | 1 |
| 23 | YAMASHITA Toranosuke | 1 |
| 24 | YUNOKI Shingen | 1 |
| 25 | TSUTSUI Yamato | 1 |
| 26 | KIMURA Taiyo | 1 |
| 27 | INOUE Takumi | 1 |
| 28 | HASHIKAWA Jo | 1 |
| 29 | MATSUI George | 1 |
| 30 | ABE Gen | 1 |
| 31 | NAGAI Kenta | 1 |
| 32 | OKUDA Kazuhito | 1 |
| 33 | UMEZAWA Kanta | 1 |
| 34 | WATANABE Ikki | 1 |
| 35 | SUEYOSHI Haruki | 1 |
| 36 | SUGENO Aira | 1 |
| 37 | IWAMURA Genji | 1 |
| 38 | OKAZAKI Kazuki | 1 |
| 39 | ENDO Hiroki | 1 |
| 40 | MORITA Toa | 1 |
| 41 | IKEYA Ryuta | 1 |
| 42 | TSURUHISA Chikara | 1 |
| 43 | MOCHIZUKI Ren | 1 |
| 44 | MATSUZAKI Issei | 1 |
| 45 | SATO Aiki | 1 |
| 46 | SHINGUU Soutaa | 1 |
| 47 | KAMIYA Keito | 1 |
| 48 | INUBUSE Kirato | 1 |
| 49 | KATO Kaisuke | 1 |
| 50 | KANAI Kensho | 1 |